When will the Milky Way and Andromeda collide?
It has being known for decades that our nearest galactic neighbor the Andromeda galaxy has been heading towards us at a rate of 120km/s. It was only recently that astronomers were sure whether or not Andromeda would score a direct hit.
While its is relatively easy to measure the approach speed it is far more difficult to measure its exact direction of motion. But a few months ago astronomers using the Hubble telescope finally pinned down its trajectory.
The Andromeda Galaxy is going to score a direct hit with the Milky Way in about 4 billion years time.
Posted in: Space